Definition of "pallial"

pallial

adjective
not comparable
1. Of, pertaining to, or produced by a mantle, especially the mantle of mollusks.
  Quotations
  The oldest points are close to the outcrop of the pallial myostracum (9 ).
  1998 May 8, Stanley R. Hart, Jerzy Blusztajn, “Clams As Recorders of Ocean Ridge Volcanism and Hydrothermal Vent Field Activity”, in Science‎, volume 280, number 5365, pages 883–886
  Along a line nearly corresponding with the horny band which proceeds from the insertions of the shell-muscles and encircles the mantle below, the pallial wall is produced inwards and forwards into a membranous fold or ligament, which I will call the pallio-visceral ligament; and this pallio-visceral ligament becoming attached to various viscera, divides the great fifth chamber into an anterior inferior, and a posterior superior portion, which communicate freely with one another.
  1859, Various, Journal of the Proceedings of the Linnean Society - Vol. 3‎
2. Of or relating to the pallium.